The Sinsen Line is part of the Oslo Tramway on the east side of the city. Most of the line is served by line 17, although the northernmost tip (Grefsen–Torshov) is served by line 18 which otherwise runs on the Grünerløkka–Torshov Line. Both services use SL95 articulated trams.

SL95 is a series of 32 low-floor, articulated trams operated on the Oslo Tramway. The series was built by Italian rail manufacturer Ansaldo/Firema, later known as AnsaldoBreda, and delivered between 1999 and 2004. Capacity for the eight-axle, three-section vehicles is 212 passengers, of which 88 can be seated. The name derives from being ordered in 1995. Original plans called for the delivery to be between 1997 and 1998. Delivery took many years due to a magnitude of technical flaws, including high noise levels, freezing during the winter and corrosion. The trams are 33.12 metres long, 2.6 metres wide and 3.62 metres tall. The aluminum vehicles weigh 64.98 tonnes and have a power output of 840 kilowatts (1,130 hp).